Compiling OpenCV 2.2 in Ubuntu 11.04

We need patch.. for modifying \modules\highgui\src\cap_v4l.cpp and \modules\highgui\src\cap.cpp

http://opencv-users.1802565.n2.nabble.com/Ubuntu-11-04-and-OpenCV-2-2-td6320520.html

https://code.ros.org/trac/opencv/attachment/ticket/862/OpenCV-2.2-nov4l1.patch

sudo apt-get install libv4l-dev